Here is something to try. Ask a random number of your cager friends if they know what the classic "turn right" hand signal means. Then do my poll!
PS, if you don't know, the classic right turn hand signal is to hold your left arm out, bent upwards at the elbow, like a capital 'L'. Personally, I extend my right arm out, with index finger pointing, to show a right turn. I don't think that most drivers know the "proper" signal. But, let's do this poll and find out!